Coordinating Conjunction "FOR," in particular, AND commas

I have received instruction that coordinating conjunctions that begin a sentence should always be immediately followed by a comma.

I do not find another thread in this forum which answers my 2 specific questions, or even helps elucidate them.

Question 1) I cannot think of a single example where coordinating conjunction "For," at the beginning of a sentence, would be immediately followed by a comma. Can you?

Question 2) Is it true that, for the 6 CC besides "For," in all instances where a CC is the first word of a sentence, that CC is immediately followed by a comma?

Thank you.